Effect of electric field strength on electro-dewatering efficiency for river sediments by horizontal electric field

被引：28

作者：

Wu, Pan ^{[1
]}

Shi, Yafei ^{[1
]}

Wang, Zheng ^{[1
]}

Xiong, Ziming ^{[1
]}

Liu, Defu ^{[1
,2
]}

Gerson, Andrea R. ^{[3
]}

Pi, Kewu ^{[1
,2
,3
]}

机构：

[1] Hubei Univ Technol, Sch Resource & Environm Engn, Wuhan 430068, Hubei, Peoples R China

[2] Hubei Key Lab Ecol Restorat River Lakes & Algal U, Wuhan 430068, Hubei, Peoples R China

[3] Blue Minerals Consultancy, Wattle Grove, Tas 7109, Australia

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2019年 / 647卷

基金：

中国国家自然科学基金;

关键词：

Electro-dewatering; Dewatering model; Dewatering productivity; Sediment cake thickness; Electric field strength; WASTE-WATER SLUDGE; ACTIVATED-SLUDGE; SEWAGE-SLUDGE; VOLTAGE; MODEL; PERFORMANCE; PARAMETERS; BIOSOLIDS; GRADIENT;

D O I：

10.1016/j.scitotenv.2018.07.464

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A series of electro-dewatering experiments were conducted to explore the effect of sediment cake thickness (1-5 cm) and electric field strength (2-50 V cm(-1)). The final dry solids content, energy consumption and dewatering productivity were modeled and the validity of the model was tested. It was demonstrated that the electric field strength determines final dry solids content and the power utilization is an exponential function of electric field strength. It was also found that a relatively low electric field strength (<10 V cm(-1)) significantly decreased energy consumption while maintaining an acceptable dry solids content. These findings are beneficial to practical applications of electro-dewatering. Keywords: (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：1333 / 1343

页数：11

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